Thermo-mechanical study of rapidly solidified amorphous alloys Al 85Ni 5Co 2RE 8

L. Stojanova, K. Russew, E. Fazakas, L. K. Varga

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8 Citations (Scopus)

Abstract

The thermal stability and viscous flow behavior of three quaternary amorphous alloys Al 85Ni 5Co 2RE 8 (RE = Ce, Gd, U) are studied. The viscosity experimental results are interpreted on the basis of the free volume model (FVM). The values of the model parameters obtained are used for estimation of the glass forming ability (GFA) in terms of Angell parameter, and the fracture strength of the alloys based on its correlation with the glass transition temperature. The results show that the amorphous alloys Al 85Ni 5Co 2RE 8 (RE = Ce, Gd, U) posses an excellent fracture strength (1.3-1.5 GPa). The replacement of RE by U leads to best fracture strength and highest GFA.

Original languageEnglish
Pages (from-to)192-197
Number of pages6
JournalJournal of Alloys and Compounds
Volume540
DOIs
Publication statusPublished - Nov 5 2012

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Keywords

  • Aluminum
  • Crystallization
  • Glass forming ability
  • Mechanical properties
  • Metallic glass
  • Viscosity

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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